Ice-cream freezer.



Patented Aug. 7,1900] J. A. E-. ANDERSON. ICE CREAM FREEZER.

( pphca-tion filed Jan; 27, 1900 (No Model.) 2 Sheets Sheet I j'zvenfiz? 54; MMQ/ J, v

UNITED STATES PATENT OFFI E.

JOHN A. ANDERSON, on CHICAGO, ILLINOIS.

ICE-CREAM FREEZER.

SPECIFICATION formin part of Letters Patent No. 655,387, dated August 7, 1900.

Application filed January 27, 1900. Serial No. 2,942. (No model.)

To all whom it may concern:

Be it known that I, J OHN A. E. ANDERSON, a citizen of the United States, residing in Ohicago, in the county of Cook and State of Illinois, have invented anew and useful Improvement in Ice-Cream Freezers, of which the following is a specification.

My object in this invention is to improve the construction of ice-cream freezers shown,

in my Patents No. 603,227, of April 26, 1898, and No. 038,688, of December 12, 1899. In my said patented freezers I have met with difficulty from the fact that they did not perfectly prevent the brine from the ice-reservoir finding its way into the freezing or cream chamber. Thus in the case of Patent No. 038,688 it enters from the ice-reservoir, between the tubular bearing 22 and sleeve 27, and seeps through the joint at the upper end of those parts onto the stem 9,whence it readily finds its way into the cream. The main object of my invention has been to prevent this result, and I accomplish it by the construction set forth below.

My invention also includes further improvements in the construction of the freezer, which are also described below and illustrated, in connection with the main feature, in the accompanying drawings, in which Figure 1 is a vertical section of myimproved freezer. Fig. 2 is a horizontal section of the cream-chamber. Fig. 3 is a perspective of the scraper and beater. Figs. at and 5 are perspective views of the supporting-stem and the devices by which it is held to the base and locked in position.

In said drawings, 6 represents the ice chamber or reservoir, the body and bottom whereof are integral, being made of indurated fiber or similar material, and the breast 7 whereof is of sheet metal orimped to the upper edge of the body. In the breast is formed an inlet 8, whereby the ice and salt may be inserted, and which inlet is closed by a screw-cap 9. An operating-handle 10 is also secured in the breast, as plainly shown.

Extending upward through the bottom of the reservoir is a tube 11, forming a hearing at the lower end of the reservoir, whereby the latter is rotatably support-ed upon the pivotal portion 12 of a supporting-stem formed of round metal possessing the necessary stiffness, and having a portion 13 bent at right angles to the pivotal portion and serving as a standard when the freezer is tipped, as in Fig. 1, and another portion let bent at right angles to portion'13 and laterally of the freezer and serving as a rock-shaft upon which to tip the freezer. A sheet metal strap 15 is bent over this rock-shaft portion of the stem and secured to the base 16 by screws 17 at each end of the strap. For the purpose of locking the stem in the position occupied by it when the freezer is being rotated I bend the outer end of the rock-shaft at right angles, as seen at 18, Figs. 4 and 5, and provide a sliding locking device made of wire bent so as to form a loop 19, movable into position over the point of the part 18, and with limbs at each side sliding in ways formed in the sheetmetal retainer 20, attached to the base. The slide may be moved out of engagement by pressure applied to the bent-up end 21 of one of its limbs. The freezer has two positions, both indicated at Fig. 1, and the lockingslide is shown in its non-acting posit-ion at both Figs. 5 and 1.

Inside the ice-chamber is located the freezing or cream chamber 22, having sides and bottom of sheet metal, a removable cover 23, and a central sleeve or tube 24, secured in and extending both above and below the bottom of said chamber. This sleeve is soldered to tube 11 throughout the portions thereof which are in contact, so that no brine can get between them, and surrounding that portion of the sleeve below the bottom of chamber 22 is a hollow boss 25, soldered to the sleeve and tube 11 at 26 and to the bottom of chamber 22 at 27. This boss serves to strengthen the bottom of chamber 22, to aid in preventing the upper portion of the freezer from wabbling on its axial support, and as additional security against the entrance of the brine into the cream-chamber at the joint between the bottom of the chamber and the sleeve 24. At its upper end said sleeve has an inturned flange 28, which fits and forms an upper bearing for the pivotal support 12.

The outside of the lower end of tube 11 is threaded, and this thread engages the bottomof the ice-reservoir 6, so as to render the tube rigid in said bottom, and a lock-nut 47, threaded on the lower projecting end of the tube, prevents any rotation of the tube. To prevent any possibility of leakage at the joint 'consist of a scraper 32 and beater 33. former of these is preferably a strip of wood between the tube and the reservoir-bottom, suitable means may be employed consisting, preferably, of a large metal washer 29, surrounding the tube and next to the bottom, a paper or soft washer next to washer 29, and a compressing-washer 31 between said washer 30 and the lock-nut.

The cream-chamber is suitably joined to the breast of the ice-reservoir at the top edges. This joint maybe a separable or a non-separable one, as preferred, and is desirably such a one as will tend to exclude the brine from access to the cream. In the construction shown the joint is separable, and this permits the removal of the cream-chamber from the icechamber by removing the nut and washers at the bottom and-turning the cream-chamber until the tube 11 is unscrewed from the bottom of the ice-chamber.

At Figs. 2 and 3 are shown the details of the devices employed to stir the cream. They The adapted to remove the congealed cream from the inside of the wall-of the cream-chamber as fast as it forms and is yieldingly held against the wall by spring-arms 34 345, the bases of which are attached to a tube 35, adapted to be slipped over stem 12 and sleeve 24 and to rest on the bottom of the chamber. The beater is a sheet-metal wing, preferably in one piece with said tube 35, and is adapted to pass the cream outwardly from the center of the chamber. The tube 35 is closed. at the top, with the exception of an opening cut out so as to fit the upper end of the support 12, and as this end is flattened 011 one side, as seen at 37, it will be seen that the tube and the parts carried by it will be held from turning with the ice and cream chambers when the latter are rotated, and as a result of this the cream will be alternately forced away from and moved back toward the outer portion of the chamber, and thus be perfectly mixed and come from the freezer without lumps or grain and evenly frozen throughout. The beater may be braced from the tube 35 by wires 38. The tube is locked on stem 12 by a pin 39 passingthrough'the upper end of the stem, and thereby the rotating parts of the freezer are also looked to said stem. I

WVhile 1 have described the cream-chamber as detachable from the ice-reservoir, it is made so forconvenience in making repairs. It is not intended that it shall be detached at any other time, and hence is not so readily removable that users will attempt to detach it.

The sleeve 21 is soldered to the bottom of the cream-chamber at their junction 40, as

plainly shown at Fig. 1. The brace-wires 38 may be and preferably are in one piece with the spring-arms 34.

By soldering the tube and sleeve 24 together I obviate all necessity for the packed joint at the upper ends of those parts shown in my Patent No. 638,688, which joint even it perfeet when the freezer is new is apt to become imperfect, so that the brine works its way throughit, and especially is this so if the parts are taken apart and reassembled by people who do not perceive the necessity of keeping that joint tight.

I claim 1. The ice-cream freezer, having its reservoir and its cream-chamber rotatably mounted upon a pivotal axial support projecting upward into the reservoir and chamber, and also having a tubular bearing for said support covering that portion thereof passing through the brine, and a sleeve fitting over and soldered to said bearing and extending from below the cream-chamber up into the same, substantially as specified.

2. The ice-cream freezer, having its reservoir and its cream-chamber rotatably mounted upon a pivotal axial support projectingupward into the reservoir and chamber,and also having the tubular bearing 11 and sleeve 24 soldered together, and both surrounding said support, substantially as specified.

3. The ice cream freezer having its ice-reservoir and cream-chamber rotatably mounted upon a pivotal axial support projecting upwardly through the bottom of both the I'GSGI' voir and chamber, and also having in combi nation with said support a tubular bearing surrounding the lower end of said support and preventing access by the brine to that portion thereof below the cream-chamber, and a sleeve fitting over and soldered to said tubular bearing, and extending from below the cream-chamber upward into the same, whereby the brine is efiectually excluded from between said bearing and said sleeve, substantially as specified.

4. The combination with the freezer, movably supported by a rock-shaft having its end 18 bent at right angles, a sliding catch for engaging said end 18, and a base to which both the rock-shaft and catch are secured, sub

stantially as specified.

5. The combination with the freezer, movably supported by a rock-shaft having its end 18 bent at right angles, a sliding catch for engaging said end 18, and consisting of a looped wire 19, and retainer 20,the wire having limbs at each side of said end 18 and a projecting end 21 for operating it, and a base to which both the rock-shaft and retainer are attached, substantially as specified.

6. The combination with the rotatable icereservoir and cream chamber, of supports therefor consisting of a pivot 12, standard 13, rock-shaft 14 and locking end 18 all in one piece of metal, the tubular hearing within the freezer for the part 12, the sliding catch, the base, the strap 15 and retainer 20, substantially as specified.

JOHN A. E. ANDERSON.

WVitnesses H. M. MUNDAY, Enw. S. EVARTS. 

